JavaScript: Uncapitalize the first character of a string

Last update on May 30 2022 10:00:54 (UTC/GMT +8 hours)

JavaScript String: Exercise-39 with Solution

Write a JavaScript function to uncapitalize the first character of a string.

Test Data:
console.log(Uncapitalize('Js string exercises'));
"js string exercises"

Pictorial Presentation:

JavaScript: Uncapitalize the first character of a string

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to uncapitalize the first character of a string.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function Uncapitalize(str1){
  return str1.charAt(0).toLowerCase() + str1.slice(1);
}
 console.log(Uncapitalize('Js string exercises'));

Sample Output:

js string exercises

Flowchart:

Live Demo:

See the Pen JavaScript Uncapitalize the first character of a string-string-ex-39 by w3resource (@w3resource) on CodePen.

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Previous: Write a JavaScript function to create a case-insensitive search.
Next: Write a JavaScript function to Uncapitalize the first letter of each word of a string.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04